+ {
+ basic_block bb = BLOCK_FOR_INSN (prev);
+ rtx_insn *end = PREV_INSN (insn);
+ reorder_insns_nobb (insn, insn, prev);
+ if (bb)
+ {
+ /* If the backend called in machine reorg compute_bb_for_insn
+ and didn't free_bb_for_insn again, preserve basic block
+ boundaries. Move the end of basic block to PREV since
+ it is followed by a barrier now, and clear BLOCK_FOR_INSN
+ on the following notes.
+ ??? Maybe the proper solution for the targets that have
+ cfg around after machine reorg is not to run cleanup_barriers
+ pass at all. */
+ BB_END (bb) = prev;
+ do
+ {
+ prev = NEXT_INSN (prev);
+ if (prev != insn && BLOCK_FOR_INSN (prev) == bb)
+ BLOCK_FOR_INSN (prev) = NULL;
+ }
+ while (prev != end);
+ }
+ }